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                [Ctsc2004]公式编辑器                </h1>
                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
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                                <h3>题目描述</h3><p><div style="text-indent: 24pt"></div>
<div style="text-indent: 24pt">
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">编辑数学公式总是一件烦人的事情，为此</span><span lang="EN-US"><font face="Times New Roman">HURRICANE</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">小组准备出一个编辑数学公式的软件。除了基本功能外，软件还将实现分式和矩阵输入。按照设想，软件应该是符合人性化设计的，必须最大限度的方便用户输入，尽管代价是软件开发极其复杂。幸好输入的方式和格式都已定好，你只需要编个处理程序就行了，下面是相关的约定和格式：</span></font></p>
<h3 style="margin: 7pt 12pt"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">【格式控制的概念】</font></span></h3>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><o:p><font face="Times New Roman" size="3">&nbsp;</font></o:p></span></p>
<table class="MsoTableGrid" cellspacing="0" cellpadding="0" width="538" align="right" border="1" style="border-right: medium none; border-top: medium none; margin: auto 6.75pt; border-left: medium none; width: 403.2pt; border-bottom: medium none; border-collapse: collapse; mso-border-alt: solid windowtext .5pt; mso-table-overlap: never; mso-yfti-tbllook: 191; mso-table-lspace: 9.0pt; mso-table-rspace: 9.0pt; mso-table-anchor-vertical: paragraph; mso-table-anchor-horizontal: column; mso-table-left: right; mso-table-top: .05pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext">
    <tbody>
        <tr style="height: 26.6pt; mso-yfti-irow: 0; mso-yfti-firstrow: yes">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 26.6pt; background-color: transparent; mso-border-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><strong><font face="黑体" size="3">元素</font></strong></p>
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            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 26.6pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">元素可以是<u>运算符</u>、<u>括号</u>、<u>数字</u>、<u>字母</u>、<u>矩阵</u>、<u>分式</u>。</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
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        <tr style="height: 34.55pt; mso-yfti-irow: 1">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 34.55pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span style="mso-ascii-font-family: 'Courier New'; mso-hansi-font-family: 'Courier New'; mso-bidi-font-family: 'Courier New'"><strong><font face="黑体" size="3">数字、字母和括号</font></strong></span></p>
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            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 34.55pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">数字包括</span><span lang="EN-US"><font face="Times New Roman">&rsquo;0&rsquo;..&rsquo;9&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</span><span lang="EN-US"><font face="Times New Roman">&rsquo;.&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。字母包括</span><span lang="EN-US"><font face="Times New Roman">&rsquo;A&rsquo;..&rsquo;Z&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</span><span lang="EN-US"><font face="Times New Roman">&rsquo;a&rsquo;..&rsquo;z&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。括号包括</span><span lang="EN-US"><font face="Times New Roman">&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</span><span lang="EN-US"><font face="Times New Roman">&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</span><span lang="EN-US"><font face="Times New Roman">&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）</span><span lang="EN-US"><font face="Times New Roman">&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。它们都只占一行，该行也是对齐行。</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
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        <tr style="height: 38.55pt; mso-yfti-irow: 2">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 38.55pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><strong><font face="黑体" size="3">表达式</font></strong></p>
            </td>
            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 38.55pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><strong><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">由</span><span><font face="Times New Roman">0</font>个到至多</span><span><font face="Times New Roman">500</font>个</span></strong><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">元素<b style="mso-bidi-font-weight: normal">构成的序列</b>。其中矩阵与分式元素总个数最多不超过</span><span lang="EN-US"><font face="Times New Roman">30</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个。</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
            </td>
        </tr>
        <tr style="height: 69.85pt; mso-yfti-irow: 3">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 69.85pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><strong><font face="黑体" size="3">编辑框</font></strong></p>
            </td>
            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 69.85pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><span><strong>一个输入<u>表达式</u>的矩形区域。</strong>每一个编辑框都包括一个对齐行用作编辑框相互之间的对齐。且我们定义编辑框的宽度为最长一行的字符个数，例如表达式空的时候为</span><span lang="EN-US"><font face="Times New Roman">0</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，高度为最高行与最低行之间相差的行数（包括），但最小为</span><span lang="EN-US"><font face="Times New Roman">1</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，即使表达式为空。</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
            </td>
        </tr>
        <tr style="height: 53.45pt; mso-yfti-irow: 4">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 53.45pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><strong><font face="黑体" size="3">对齐行</font></strong></p>
            </td>
            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 53.45pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><u><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><strong>编辑框</strong></span></u><span><strong>或<u>元素</u>中某一特定行</strong>。该行用于框内对齐<u>表达式</u>及框间对齐，对齐时需要使<u>表达式</u>中的<u>元素</u>的<u>对齐行</u>位于<u>编辑框</u>的对齐行上。</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
            </td>
        </tr>
        <tr style="height: 47.2pt; mso-yfti-irow: 5">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 47.2pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><strong><font face="黑体" size="3">运算符</font></strong></p>
            </td>
            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 47.2pt; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">有</span><span lang="EN-US"><font face="Times New Roman">&rsquo;+&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</span><span lang="EN-US"><font face="Times New Roman">&rsquo;-&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</span><span lang="EN-US"><font face="Times New Roman">&rsquo;*&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</span><span lang="EN-US"><font face="Times New Roman">&rsquo;/&rsquo;</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">四个，为了区分&ldquo;</span><span lang="EN-US"><font face="Times New Roman">-</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&rdquo;（减号）与分数线，&ldquo;</span><span lang="EN-US"><font face="Times New Roman">-</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&rdquo;两边分别加上一个空列。</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
            </td>
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        <tr style="mso-yfti-irow: 6">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><strong><font face="黑体" size="3">矩阵</font></strong></p>
            </td>
            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">一个</font></span><span lang="EN-US"><span style="position: relative; top: 3pt; mso-text-raise: -3.0pt"><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><font face="Times New Roman"><font size="3"> <v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path><o:lock v:ext="edit" aspectratio="t"></o:lock></font></font></v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" o:ole="" style="width: 29.25pt; height: 11.25pt"><v:imagedata src="file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtml1\01\clip_image001.wmz" o:title=""></v:imagedata></v:shape></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">（</font></span><span lang="EN-US"><span style="position: relative; top: 3pt; mso-text-raise: -3.0pt"><v:shape id="_x0000_i1026" type="#_x0000_t75" o:ole="" style="width: 51.75pt; height: 14.25pt"><font size="3"><font face="Times New Roman"> <v:imagedata src="file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtml1\01\clip_image003.wmz" o:title=""></v:imagedata></font></font></v:shape></span><font face="Times New Roman" size="3">,</font><span style="color: white"><font face="Times New Roman" size="3">_</font><span style="position: relative; top: 3pt; mso-text-raise: -3.0pt"><v:shape id="_x0000_i1027" type="#_x0000_t75" o:ole="" style="width: 48.75pt; height: 14.25pt"><font size="3"><font face="Times New Roman"> <v:imagedata src="file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtml1\01\clip_image005.wmz" o:title=""></v:imagedata></font></font></v:shape></span></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">）的矩阵包含</font></span><span lang="EN-US"><span style="position: relative; top: 3pt; mso-text-raise: -3.0pt"><v:shape id="_x0000_i1028" type="#_x0000_t75" o:ole="" style="width: 29.25pt; height: 11.25pt"><font face="Times New Roman"><font size="3"> <v:imagedata src="file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtml1\01\clip_image007.wmz" o:title=""></v:imagedata></font></font></v:shape></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个<u>编辑框</u>将矩阵分为了</span><i style="mso-bidi-font-style: normal"><span lang="EN-US"><font face="Times New Roman">m</font></span></i><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个<u>编辑列</u>和</span><i style="mso-bidi-font-style: normal"><span lang="EN-US"><font face="Times New Roman">n</font></span></i><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个<u>编辑行</u>。在矩阵的同一<u>编辑行</u>中，相邻的两个编辑框按编辑框的对齐行对齐，同一编辑列的编辑框按照它们的宽度居中对齐。且必须保证行与行之间至少存在一个空行，列与列之间至少存在一个空列。第一列左边与最后一列右边每行各有一个&ldquo;</span><span lang="EN-US"><font face="Times New Roman">[</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&rdquo;和&ldquo;</span><span lang="EN-US"><font face="Times New Roman">]</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&rdquo;，位于各行表达式的对齐行上，如图所示：</span></font></p>
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><o:p><font face="Times New Roman" size="3">&nbsp;</font></o:p></span></p>
            <table class="MsoTableGrid" cellspacing="0" cellpadding="0" border="1" style="border-right: medium none; border-top: medium none; border-left: medium none; border-bottom: medium none; border-collapse: collapse; mso-yfti-tbllook: 480; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
                <tbody>
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                        <td width="96" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 72pt; padding-top: 0cm; border-bottom: #ece9d8; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt">
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font face="宋体" size="3">图形表示</font></p>
                        </td>
                        <td valign="top" width="336" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 252pt; padding-top: 0cm; border-bottom: #ece9d8; background-color: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US" style="font-family: &quot;Courier New&quot;"><span style="position: relative; top: 50pt; mso-text-raise: -50.0pt"><v:shape id="_x0000_i1029" type="#_x0000_t75" o:ole="" style="width: 93pt; height: 105.75pt"><v:imagedata src="file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtml1\01\clip_image008.wmz" o:title=""></v:imagedata></v:shape></span></span><span lang="EN-US" style="mso-no-proof: yes"><o:p></o:p></span></p>
                        </td>
                    </tr>
                    <tr style="mso-yfti-irow: 1; mso-yfti-lastrow: yes">
                        <td width="96" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 72pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; background-color: transparent; mso-border-bottom-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt">
                        <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-no-proof: yes">文本表示</span><span class="CharChar"><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;"><o:p></o:p></span></span></font></p>
                        <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><o:p><font face="Times New Roman" size="3">&nbsp;</font></o:p></span></p>
                        </td>
                        <td valign="top" width="336" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 252pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; background-color: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><v:rect id="_x0000_s1026" style="margin-top: 6.1pt; z-index: 1; left: 0px; margin-left: 40.35pt; width: 7.1pt; position: absolute; height: 124.8pt; text-align: left; mso-position-horizontal-relative: text; mso-position-vertical-relative: text"><v:stroke dashstyle="dash"></v:stroke></v:rect><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>612</font></font></span></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><font face="宋体"><span lang="EN-US">[ <span style="mso-spacerun: yes">&nbsp;</span>456<span style="mso-spacerun: yes">&nbsp;&nbsp; </span>-----]<span style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp; </span>-</span>第一<u>编辑行</u>的对齐行</font></font></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>123</font></font></span></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><font face="宋体"><span lang="EN-US"><span style="mso-tab-count: 5">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>-</span>空行、整个矩阵的对齐行</font></font></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>65535</font></font></span></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><font face="宋体"><span lang="EN-US">[-------<span style="mso-spacerun: yes">&nbsp; </span>234 ]<span style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp; </span>-</span>第二<u>编辑行</u>的对齐行</font></font></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><v:shapetype id="_x0000_t48" coordsize="21600,21600" o:spt="48" path="m@0@1l@2@3@4@5nfem,l21600,r,21600l,21600xe" adj="-10080,24300,-3600,4050,-1800,4050"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="val #0"></v:f><v:f eqn="val #1"></v:f><v:f eqn="val #2"></v:f><v:f eqn="val #3"></v:f><v:f eqn="val #4"></v:f><v:f eqn="val #5"></v:f></v:formulas><v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="custom" arrowok="t" o:connectlocs="@0,@1;10800,0;10800,21600;0,10800;21600,10800"></v:path><v:handles><v:h position="#0,#1"></v:h><v:h position="#2,#3"></v:h><v:h position="#4,#5"></v:h></v:handles><o:callout v:ext="edit" on="t"></o:callout></v:shapetype><v:shape id="_x0000_s1027" type="#_x0000_t48" adj="-10800,1054,-6349,7902,-1964,7902,-10800,1054" style="margin-top: 13.9pt; z-index: 2; left: 0px; margin-left: 75.6pt; width: 66pt; position: absolute; height: 24.6pt; text-align: left"><v:textbox style="mso-next-textbox: #_x0000_s1027">
                        <table cellspacing="0" cellpadding="0" width="100%">
                            <tbody>
                                <tr>
                                    <td style="border-right: #ece9d8; border-top: #ece9d8; border-left: #ece9d8; border-bottom: #ece9d8; background-color: transparent">
                                    <div>
                                    <p class="MsoNormal" style="margin: 0cm 0cm 0pt"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">间隔</span><span lang="EN-US"><font face="Times New Roman">1</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">列</span></font></p>
                                    </div>
                                    </td>
                                </tr>
                            </tbody>
                        </table>
                        </v:textbox></v:shape><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>1</font></font></span></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>-----</font></font></span></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;&nbsp; </span>255</font></font></span></p>
                        </td>
                    </tr>
                </tbody>
            </table>
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">若矩阵的编辑行数</span><i style="mso-bidi-font-style: normal"><span lang="EN-US"><font face="Times New Roman">n</font></span></i><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为奇数，则矩阵的对齐行为中间那行编辑行中编辑框的对齐行，否则为中间两个编辑行之间的空行；</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
            </td>
        </tr>
        <tr style="mso-yfti-irow: 7; mso-yfti-lastrow: yes">
            <td width="79" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 59.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="NormalStrong" style="margin: 0cm 0cm 0pt; text-indent: 0cm; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><strong><font face="黑体" size="3">分式</font></strong></p>
            </td>
            <td width="458" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 343.8pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; background-color: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">分式由分子和分母两个编辑框以及它们之间的分数线组成。分式分数线为一条由&ldquo;</span><span class="CharChar"><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;">-</span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&rdquo;组成的字符序列，同时它也是分式的对齐行。分式的宽度为两个编辑框宽度的最大值加</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，即在左右两边分别加上一个&ldquo;</span><span class="CharChar"><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;">-</span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&rdquo;；而高度为两个编辑框的高度加上分数线的高度</span><span lang="EN-US"><font face="Times New Roman">1</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。两个编辑框按居中对齐，如图：</span></font></p>
            <table class="MsoTableGrid" cellspacing="0" cellpadding="0" border="1" style="border-right: medium none; border-top: medium none; margin: auto auto auto 89.75pt; border-left: medium none; border-bottom: medium none; border-collapse: collapse; mso-border-alt: solid windowtext .5pt; mso-yfti-tbllook: 191; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext">
                <tbody>
                    <tr style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes">
                        <td valign="top" width="192" style="border-right: windowtext 1pt solid; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: windowtext 1pt solid; width: 143.75pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; background-color: transparent; mso-border-alt: solid windowtext .5pt">
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>XXXX<span style="mso-tab-count: 3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="mso-spacerun: yes">&nbsp;&nbsp; </span>XX</font></font></span></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><font face="宋体" size="3">------<span style="mso-tab-count: 3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>--------</font></span></p>
                        <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>XXX<span style="mso-tab-count: 3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>XXXXXX</font></font></span></p>
                        </td>
                    </tr>
                </tbody>
            </table>
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 9.0pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-element-left: right; mso-element-top: .05pt; mso-height-rule: exactly"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在居中对齐时，如果不能正好对准，则往左偏半格，如上图左边的分母编辑框。</span><b style="mso-bidi-font-weight: normal"><span lang="EN-US"><o:p></o:p></span></b></font></p>
            </td>
        </tr>
    </tbody>
</table>
<p class="NormalStrong" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><o:p><font face="黑体" size="3"><strong>&nbsp;</strong></font></o:p></span></p>
<h3 style="margin: 7pt 12pt"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">【</span><span style="font-family: 黑体; mso-ascii-font-family: 'Times New Roman'">光标</span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控制】</span></font></h3>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><o:p><font face="Times New Roman" size="3">&nbsp;</font></o:p></span></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">应该指出，编辑框是可以层层嵌套的，比如一个编辑框内有一个矩阵，矩阵内又有若干个编辑框。我们说该编辑框比矩阵的编辑框高一级，矩阵内的所有编辑框同级，分式的两个编辑框也是同级的。</span><span><strong><font face="黑体">注意：</font>同级只是对一个矩阵或一个分式内的编辑框而言。</strong></span></font></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">光标可以跳到编辑框的开始和末尾，也可以向四个方向移动，设光标所处的最低一级的编辑框为</span><span lang="EN-US"><font face="Times New Roman">A</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</span></font></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><span lang="EN-US"><o:p><font face="Times New Roman" size="3">&nbsp;</font></o:p></span></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt 39.7pt; text-indent: -19.85pt; mso-char-indent-count: 0; mso-list: l1 level1 lfo2; tab-stops: list 39.7pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">&Oslash;</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果光标跳到编辑框的开始（末尾），则把光标置于</span><span lang="EN-US"><font face="Times New Roman">A</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的前端（末端）；</span></font></p>
<span lang="EN-US" style="font-size: 12pt; font-family: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><br clear="all" style="page-break-before: always; mso-special-character: line-break" />
</span>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; mso-char-indent-count: 0"><span lang="EN-US"><o:p><font face="Times New Roman" size="3">&nbsp;</font></o:p></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt 39.7pt; text-indent: -19.85pt; mso-list: l1 level1 lfo2; tab-stops: list 39.7pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">&Oslash;</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">当光标上下移动时</font></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt 61.85pt; text-indent: -21pt; mso-list: l1 level2 lfo2; tab-stops: list 61.85pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">n</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果</span><span lang="EN-US"><font face="Times New Roman">A</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上</span><span lang="EN-US"><font face="Times New Roman">(</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下</span><span lang="EN-US"><font face="Times New Roman">)</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">方有与</span><span lang="EN-US"><font face="Times New Roman">A</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同级的编辑框</span><span lang="EN-US"><font face="Times New Roman">B</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，则把光标置于</span><span lang="EN-US"><font face="Times New Roman">B</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的前端，</span></font></p>
<div align="center">
<table class="MsoTableGrid" cellspacing="0" cellpadding="0" border="1" style="border-right: medium none; border-top: medium none; border-left: medium none; border-bottom: medium none; border-collapse: collapse; mso-yfti-tbllook: 480; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
    <tbody>
        <tr style="height: 15pt; mso-yfti-irow: 0; mso-yfti-firstrow: yes">
            <td valign="top" width="166" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 124.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 15pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">示例</font></span></p>
            </td>
            <td valign="top" width="166" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 124.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 15pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">下移一次后</font></span></p>
            </td>
        </tr>
        <tr style="height: 47.25pt; mso-yfti-irow: 1; mso-yfti-lastrow: yes">
            <td valign="top" width="166" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 124.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 47.25pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><font size="3"><span lang="EN-US"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>XXXX</font></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;">|</span></font></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font face="宋体" size="3">------</font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span><span style="mso-spacerun: yes">&nbsp;</span>XX</font></font></span></p>
            </td>
            <td valign="top" width="166" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 124.4pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 47.25pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt; text-indent: 5.25pt; mso-char-indent-count: .5"><span lang="EN-US"><font face="宋体" size="3">XXXX</font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font face="宋体" size="3">------</font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><font size="3"><span lang="EN-US"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span><span style="mso-spacerun: yes">&nbsp;</span></font></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;">|</span><span lang="EN-US"><font face="宋体">XX</font></span></font></p>
            </td>
        </tr>
    </tbody>
</table>
</div>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt 61.85pt; text-indent: -21pt; mso-list: l1 level2 lfo2; tab-stops: list 61.85pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">n</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">否则对比</span><span lang="EN-US"><font face="Times New Roman">A</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">高一级的编辑框作同样判断，若</span><span lang="EN-US"><font face="Times New Roman">A</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是最高级别的编辑框，则不作任何处理。如图，竖线代表光标：</span></font></p>
<div align="center">
<table class="MsoTableGrid" cellspacing="0" cellpadding="0" width="340" border="1" style="border-right: medium none; border-top: medium none; margin: auto auto auto 338.2pt; border-left: medium none; width: 254.7pt; border-bottom: medium none; border-collapse: collapse; mso-yfti-tbllook: 480; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
    <tbody>
        <tr style="height: 15.65pt; mso-yfti-irow: 0; mso-yfti-firstrow: yes">
            <td valign="top" width="113" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 84.9pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 15.65pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoNormal" align="center" style="margin: 0cm 0cm 0pt; text-align: center"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">示例</font></span></p>
            </td>
            <td valign="top" width="113" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 84.9pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 15.65pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoNormal" align="center" style="margin: 0cm 0cm 0pt; text-align: center"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">下移一次后</font></span></p>
            </td>
            <td valign="top" width="113" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: windowtext 1pt solid; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 84.9pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 15.65pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoNormal" align="center" style="margin: 0cm 0cm 0pt; text-align: center"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">再下移一次后（不变）</font></span></p>
            </td>
        </tr>
        <tr style="height: 49.45pt; mso-yfti-irow: 1; mso-yfti-lastrow: yes">
            <td valign="top" width="113" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 84.9pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 49.45pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>d</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>---</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><font size="3"><span lang="EN-US"><span style="mso-spacerun: yes"><font face="宋体">&nbsp; </font></span></span><span lang="EN-US" style="font-family: &quot;Times New Roman&quot;">|</span><span lang="EN-US"><font face="宋体">c</font></span></font></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font face="宋体" size="3">-----</font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>a</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>---</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>b</font></font></span></p>
            </td>
            <td valign="top" width="113" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 84.9pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 49.45pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>d</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>---</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>c</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font face="宋体" size="3">-----</font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><v:line id="_x0000_s1028" from="4.5pt,3.75pt" to="4.5pt,42.75pt" style="z-index: 3; left: 0px; position: absolute; text-align: left"></v:line><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>a</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>---</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>b</font></font></span></p>
            </td>
            <td valign="top" width="113" style="border-right: #ece9d8; padding-right: 5.4pt; border-top: #ece9d8; padding-left: 5.4pt; padding-bottom: 0cm; border-left: #ece9d8; width: 84.9pt; padding-top: 0cm; border-bottom: windowtext 1pt solid; height: 49.45pt; background-color: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt">
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>d</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>---</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>c</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font face="宋体" size="3">-----</font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><v:line id="_x0000_s1029" from="4.35pt,6.1pt" to="4.35pt,45.1pt" style="z-index: 4; left: 0px; position: absolute; text-align: left"></v:line><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp; </span>a</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font size="3"><font face="宋体"><span style="mso-spacerun: yes">&nbsp;</span>---</font></font></span></p>
            <p class="MsoPlainText" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><font face="宋体"><font size="3"><span style="mso-spacerun: yes">&nbsp; </span>b</font></font></span></p>
            </td>
        </tr>
    </tbody>
</table>
</div>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt"><span lang="EN-US"><o:p><font face="Times New Roman" size="3">&nbsp;</font></o:p></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt 19.85pt; text-indent: -19.85pt; mso-list: l0 level1 lfo1; tab-stops: list 19.85pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">&Oslash;</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">当光标左（右）移动时</font></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt 42pt; text-indent: -21pt; mso-list: l0 level2 lfo1; tab-stops: list 42.0pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">n</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">若光标位于</span><span lang="EN-US"><font face="Times New Roman">A</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的前端</span><span lang="EN-US"><font face="Times New Roman">(</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">末端</span><span lang="EN-US"><font face="Times New Roman">)</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</span></font></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt 63pt; text-indent: -21pt; mso-list: l0 level3 lfo1; tab-stops: list 63.0pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">u</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果左</span><span lang="EN-US"><font face="Times New Roman">(</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">右</span><span lang="EN-US"><font face="Times New Roman">)</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">边没有同级的编辑框，则光标将返回到更高一级的编辑框（若无则不作处理），置于矩阵或分式的左</span><span lang="EN-US"><font face="Times New Roman">(</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">右</span><span lang="EN-US"><font face="Times New Roman">)</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">边；</span></font></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt 63pt; text-indent: -21pt; mso-list: l0 level3 lfo1; tab-stops: list 63.0pt"><span lang="EN-US" style="font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-fareast-font-family: Wingdings"><span style="mso-list: Ignore"><font size="3">u</font><span style="font: 7pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果左</span><span lang="EN-US"><font face="Times New Roman">(</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">右</span></font></p>
</div></p><hr/><h3>输入格式</h3><p><p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">每行有一个代表事件的字符串，直到文件结束。我们约定矩阵的规模不超过</font></span><span lang="EN-US"><span style="position: relative; top: 3pt; mso-text-raise: -3.0pt"><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><font size="3"><font face="Times New Roman"> 10*10<v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path><o:lock v:ext="edit" aspectratio="t"></o:lock></font></font></v:shapetype></span></span><font size="3"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，总的元素个数不超过</span><span lang="EN-US"><font face="Times New Roman">10,000</font></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</span></font></p></p><hr/><h3>输出格式</h3><p><p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">按规定的格式输出编辑框的结果，空白的地方用空格补上，每行行末不能有多余空格。最后一行行末保留一个回车。</font></span></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt">输入样例</p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><img alt="" src="../file/2550_0.jpg" /></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt">输出样例</p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"></p>
<p class="MsoNormalIndent" style="margin: 0cm 0cm 0pt; text-indent: 24pt"><img height="138" width="275" alt="" src="../file/2550_1.jpg" /></p></p><hr/><h3>样例输入</h3><pre></pre><hr/><h3>样例输出</h3><pre></pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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